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They use stinging cells, the stinging cells use there sharp spines and when the stinging cell touches prey the thread like structure explodes out of the cell and into the prey. Some stinging cells also release venom into the prey. When the prey becomes helpless, the polyp and medusa use there tentacles to pull the prey into there mouth
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Explain the difference between a polyp and a Medusa?
A polyp is anchored to substrate, like a rock or piece of coral. Anemones are polyps. They catch food with their tentacles and have the mouth on the upside. A medusa is swimming freely. Jellyfish are medusa stages. They catch food with their trailing tentacles and have the mouth on the downside. You can view polyps as the settled ´plant´ and medusa as the free-floating ´seed´, like in a dandelion. Though they aren´t plants at all, of course.
What class of cnidarians typically only live as polyps?
The class of cnidarians that typically only live as polyps is the Anthozoa. This class includes sea anemones and corals, which exist primarily as polyps and do not have a medusa stage in their life cycle.
How do polyps differ from Medusas?
In organisms that exhibit both forms, the polyp is the asexual stage and the Medusa the sexual stage. In such organisms the polyp, by budding, gives rise to Medusa, which either detach themselves and swim away or remain permanently attached to the polyp. The Medusa then produce new polyps by sexual reproduction. A Medusa produces eggs or sperm, which are usually shed into the water; when an egg is fertilized, it develops into a swimming larva, which eventually settles and grows into a polyp. In addition to this elaborate means of reproduction, the polyp can form new polyps by budding. In some groups of coelenterates either the polyp or the Medusa has become highly developed, with the reduction or complete loss of the other form. Where only the Medusa occurs, as in many jellyfish, the larva never settles, and grows directly into a Medusa. Where only the polyp exists, as in the hydra and the sea anemone, the organism has the ability to produce new polyps sexually, as well as by budding.
Two main forms of life for the cnidarians?
Polyps, which are Sessile or stationary, and Medusa which move.
What is the food of coral polyps?
Algae
What are the two body forms of cnidarians?
The two body forms of cnidarians are the polyp and the medusa. Polyps are typically sessile, tube-shaped organisms attached to a substrate, while medusae are free-swimming, umbrella-shaped organisms.
How can you obtain the title of Medusa executioner?
slay in 10mins
How do polyps swim?
polyps are sessile, therefore they do not move
What are the two forms of cnidarians?
Cnidarians come in two forms: a medusa has tentacles that hang down and polyps usually live attached to a surface.
Describe about the polymorphism in coelenterates?
iit is the phenominon in whichmore then two individuals are found in same specieces during its life cycle...as in obelia...wher polyps and medusa are formed...which have different function..polyps helps to feed so it is called nutretive zoods...and another one is medusa,which help in reproduction...so it is called reproductive zoods
Did a coral spends their adult lives as Medusa?
Corals do not spend their adult lives as medusae. Instead, they primarily exist as polyps, which are sessile, cylindrical forms that attach to the substrate and form coral reefs. The medusa stage is typically associated with the life cycle of jellyfish, which are part of the same phylum, Cnidaria, but corals do not develop into medusae in their adult form. Some corals may have a medusa stage in their reproductive cycle, but they predominantly remain as polyps throughout their lives.
Which phylum has both medusa and polyp stages in its life cycle?
Cnidaria is the phylum that exhibits both medusa and polyp stages in its life cycle. Medusae are the free-swimming form, while polyps are typically attached to a substrate.
